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Pion form factor in the k(T) factorization formalism
黄涛(理); Wu XG(吴兴刚); Wu XH(吴兴华); Huang, T; Wu, XG; Wu, XH
2004
发表期刊PHYSICAL REVIEW D
卷号70期号:5页码:53007
通讯作者China Ctr Adv Sci & Technol, World Lab, Beijing 100080, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
摘要Based on the light-cone (LC) framework and the k(T) factorization formalism, the transverse momentum effects and the different helicity components' contributions to the pion form factor F-pi(Q(2)) are recalculated. In particular, the contributions to the pion form factor from the higher-helicity components (lambda(1)+lambda(2)=+/-1), which come from the spin-space Wigner rotation, are analyzed in the soft and hard energy regions, respectively. Our numerical results show that the right power behavior of the hard contribution from the higher-helicity components can only be obtained by fully keeping the k(T) dependence in the hard amplitude, and that the k(T) dependence in LC wave function affects the hard and soft contributions substantially. As an example, we employ a model LC wave function to calculate the pion form factor and then compare the numerical predictions with the experimental data.
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.70.053007
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000224275200012
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被引频次:21[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240652
专题理论物理室
作者单位中国科学院高能物理研究所
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GB/T 7714
Huang T,Wu XG,Wu XH,et al. Pion form factor in the k(T) factorization formalism[J]. PHYSICAL REVIEW D,2004,70(5):53007.
APA 黄涛,吴兴刚,吴兴华,Huang, T,Wu, XG,&Wu, XH.(2004).Pion form factor in the k(T) factorization formalism.PHYSICAL REVIEW D,70(5),53007.
MLA 黄涛,et al."Pion form factor in the k(T) factorization formalism".PHYSICAL REVIEW D 70.5(2004):53007.
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